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Article

Antifungal Activity and Chemical Composition of Seven Essential Oils to Control the Main Seedborne Fungi of Cucurbits

1
Laboratory of Plant Protection, National Institute for Agronomic Research of Tunisia, University of Carthage, Rue Hédi Karray, Ariana 2080, Tunisia
2
Department of Agricultural, Food and Environmental Sciences, Marche Polytechnic University, Via Brecce Bianche, 60131 Ancona, Italy
3
Dipartimento di Farmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy
4
National Agricultural Institute of Tunisia, 43 Avenue Charles Nicolle, Tunis 1082, Tunisia
5
Regional Centre for Research in Horticulture and Organic Agriculture (CRRHAB), Chott Mariem, Sousse 4042, Tunisia
*
Author to whom correspondence should be addressed.
Academic Editors: Edoardo Marco Napoli and Maura Di Vito
Received: 30 December 2020 / Revised: 19 January 2021 / Accepted: 20 January 2021 / Published: 22 January 2021
(This article belongs to the Special Issue Chemical Composition and Biological Activities of Essential Oils)
Essential oils represent novel alternatives to application of synthetic fungicides to control against seedborne pathogens. This study investigated seven essential oils for in vitro growth inhibition of the main seedborne pathogens of cucurbits. Cymbopogon citratus essential oil completely inhibited mycelial growth of Stagonosporopsis cucurbitacearum and Alternaria alternata at 0.6 and 0.9 mg/mL, respectively. At 1 mg/mL, Lavandula dentata, Lavandula hybrida, Melaleuca alternifolia, Laurus nobilis, and two Origanum majorana essential oils inhibited mycelia growth of A. alternata by 54%, 71%, 68%, 36%, 90%, and 74%, respectively. S. cucurbitacearum mycelia growth was more sensitive to Lavandula essential oils, with inhibition of ~74% at 1 mg/mL. To determine the main compounds in these essential oils that might be responsible for this antifungal activity, they were analyzed by gas chromatography–mass spectrometry (GC-MS). C. citratus essential oil showed cirtal as its main constituent, while L. dentata and L. nobilis essential oils showed eucalyptol. The M. alternifolia and two O. majorana essential oils had terpinen-4-ol as the major constituent, while for L. hybrida essential oil, this was linalool. Thus, in vitro, these essential oils can inhibit the main seedborne fungi of cucurbits, with future in vivo studies now needed to confirm these activities. View Full-Text
Keywords: Alternaria alternata; cucurbits; Cymbopogon citratus; GC-MS; Stagonosporopsis cucurbitacearum Alternaria alternata; cucurbits; Cymbopogon citratus; GC-MS; Stagonosporopsis cucurbitacearum
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MDPI and ACS Style

Moumni, M.; Romanazzi, G.; Najar, B.; Pistelli, L.; Ben Amara, H.; Mezrioui, K.; Karous, O.; Chaieb, I.; Allagui, M.B. Antifungal Activity and Chemical Composition of Seven Essential Oils to Control the Main Seedborne Fungi of Cucurbits. Antibiotics 2021, 10, 104. https://0-doi-org.brum.beds.ac.uk/10.3390/antibiotics10020104

AMA Style

Moumni M, Romanazzi G, Najar B, Pistelli L, Ben Amara H, Mezrioui K, Karous O, Chaieb I, Allagui MB. Antifungal Activity and Chemical Composition of Seven Essential Oils to Control the Main Seedborne Fungi of Cucurbits. Antibiotics. 2021; 10(2):104. https://0-doi-org.brum.beds.ac.uk/10.3390/antibiotics10020104

Chicago/Turabian Style

Moumni, Marwa, Gianfranco Romanazzi, Basma Najar, Luisa Pistelli, Hajer Ben Amara, Kaies Mezrioui, Olfa Karous, Ikbal Chaieb, and Mohamed B. Allagui 2021. "Antifungal Activity and Chemical Composition of Seven Essential Oils to Control the Main Seedborne Fungi of Cucurbits" Antibiotics 10, no. 2: 104. https://0-doi-org.brum.beds.ac.uk/10.3390/antibiotics10020104

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